in how many ways can 5 letters be posted in 3 boxes such that each box get atleast 1 letter

Question

Answer 1

x+y+z=5 no.of non zero solutions are n-1Cr-1.
4C2

Answer 2

x+y+z=5 no.of non zero solutions are n-1Cr-1.
4C2

Answer 3

Use the Formula
(n-1) C (r-1)
where n is the number of things to be distributed and r is the number to whom it need to be distributed,

Answer 4

Use the Formula
(n-1) C (r-1)
where n is the number of things to be distributed and r is the number to whom it need to be distributed,

Answer 5

6 ways?

Answer 6

6 ways?